Increase pyam lower bound to 1.4.0
Increase pyam lower bound to 1.4.0

pyam currently incorrectly enforces pint <0.19. And we definitely prefer
newer pyam over older pint.

ocefpaf/staged-recipes,conda-forge/staged-recipes,jakirkham/staged-recipes,jakirkham/staged-recipes,johanneskoester/staged-recipes,johanneskoester/staged-recipes,ocefpaf/staged-recipes,conda-forge/staged-recipes